My main problem with this is lack of F/G interest, careful composition needed to find something, either a small bush or rock to catch the eye, looking around this scene there is plenty to choose from. Also the brightness of the sun setting has caused it to under expose the F/G, use of a ND graduated filter would over come this allowing the camera to expose the F/G properly for you.
The horizon is slightly of, again, careful setting up while composing the shot or adjust in post processing.
Trawl the main photograph gallery and you will see some superb landscape shots to compare and get ideas.
I hope this helps in some small way and most of enjoy your photography.
Regards
Stewart

Edit, someone beat me to it on a mod!!! Rule of thirds works wonders, try and place the horizon on one of these lines.